Fix UI bug that might cause user to lose funds

Conflicts:
	www/sellaccept.html
	www/selloffer.html
Fix amount accepted
Updated BTC desired to 'amount_available*price_per_coin' for accuracy
Update UI to be more explicit in the data being displayed to the user
More accurate field name on sell offer page
Revert "Update UI to be more explicit in the data being displayed to the user" based on DexX's suggestions.

This reverts commit f6935ae8e661d1766e3cbf7f883f5ec752555399.
Commit fixes and improvements to issue 53, credit DexX
Add Amount bought to the sell offer bid listing